Finding the Fourth Proportional to 16,009.90, 22,091.61 and 8,936.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,009.90 : 22,091.61 = 8,936.62 : x
2. Step 2: Convert to fraction form
   16,009.90/22,091.61 = 8,936.62/x
3. Step 3: Cross multiply
   16,009.90x = 22,091.61 × 8,936.62
4. Step 4: Simplify right side
   16,009.90x = 197,424,213.30
5. Step 5: Solve for x
   x = 197,424,213.30/16,009.90
6. Step 6: Final answer
   x = 12,331.39